Improvement in ovens



D. MOORE.

' Bakers Oven.

Patented Febts. 1870.

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DANIEL MOORE, or

DAVENPORT, IOWA.

Letters Patent N 99,694, dated February 8, 1870.

IMPROVEMENT 1N OVENS.

The Schedule referred to in these Letters Patent and making part of the same.

To all whom it may concern.-

'Be it known that I, DANIEL Moons, of the city of Davenport, in the county of Scott, and State of Iowa, have invented a new and improved Bake-Oven; and

I do hereby declare. that the following is, a full, clear,.

and exact description of the construction and operation of the same, reference being had to the accomcated by the line a: a: oftig.2.

Like letters in the different figures of the drawings indicate like parts. I

This invention is designed as an improvement of my bake-oven patented June 1, 1869, experience having [shown that the expansion and contraction of the iron plates used in that oven loosens the brick-work; and

The nature of this invention consists- First, of an inner oven, entirely of brick, having hot-air chambers formed by brick arches below and above the oven.

Second, of hot-air fines, built in the out-side walls, coimnunicating with the furnaces and the interior of theoven, and of ventilating-tines leading from the inten'or of the oven to the chimneys.

A A represent the outside walls, of brick;

B B, the hot-air chambers, formed by the double arches O C under the oven 0;

l) is an arch, forming the crown of the oven;

E, the hot-air chamber above the oven; and

I", the top arch.

The double arches G O are made of fire-brick, the

. other arches of good common brick.

All the arches spring from the outside walls; the double arches 0 Cat the top of the furnaces, arch D twelve inches above the bottom of the oven, and arch F four inches above the top of arch D.

The space between the outside walls and between the furnaces is filled with dirt and sand, and paved with fire-brick, so that the top of the pavement will come just below the. draught-holes in the backjand sides of the furnaces, thus forming a durable bottom for the hot-air chambers B B; (see iig. 2.)

The top of the double arches C U is levelled up with sand, and paved with brick, forming the level bottom of the oven, as seen in tig. 2.

G is a hot-air chamb at the back of the oven, about four inches deep, and extending the entirewidth and. depth of the oven, and communicating with the hot-air chambers B B below, and'cha mber E above the oven, as shown in iig.

H H are. exit-flues, built in the front wall, and .conmnmicating with chamber E, as shown by dotted lines in fig.- 2.

K K represent hot-air fines, built in and extending along the side walls from the back ends of the furnaces to 'the back end of the oven, as seen in figs. 2 and 3, and connecting with tho furnaces by the openings four inches square-a a, as seen in lig. 2, aml b b b b, as seen in fig. 3; the flues being provided withdampers (Z (I, for conducting and regulating the passage of heat from the furnacesdirectly to the interior of the oven.

' 'M is a. ventilating-passage or flue, through the crown of the oven, at the front end thereof, as shown in fig. 3, and connecting with a horizontal flue, N, which is built in the. front wall, and connects with the chimneys H H, as shown in ti". 3, and dotted lines in lig. 2.

Ghambers B B are made to communicate with each other by the. openings 0 e e, as seen in fig. 3, for

the purpose of allowingthe heat to pass from one to the other-, in order that the entire bottom of the oven may be equally heated.

The dotted line above the openings 0 c o, seen in fig. 3, represents the crown of chambers B B on each side of these openings.

Flues, connecting the furnaces directly with the chimneys, and provided with dampers, are made and arranged, and the draughtand heat are regulated in a manner similar to my former patent.

Chamber E connects, by proper flucs, directly with chimneys H H. l

The oven-doors are arranged to slide'in grooves in a cast-iron frame, which is built in the front brick walls, the frame being made with centre stationary partition-plate I.

The outside doors and door-frames of the furnaces are made and arranged similar to those of my former oven.

It It are inside furnace-doors, made with draught holes h h, as seen in ti". 1.

The heat passes out of the furnaces through draught-holes S S S in the sides and baolccnds thereot',-into and through chambers B B under the oven, up chamber G at the back end of the oven, and over the top of the oven through chamber 1' as indicated by the arrows shown in fig. 3; and by drawing out dampers ll (l'thc heat is conducted through openings and fluesa a, K K, and b b b, directly to. the intcriorot' the oven; and by drawing out damper f any smoke or steam which may be in the oven is allowed to escape through the ventilating-fines M and N into the chimneys H H.

Having thus fully described my invention,

What I claim therein as new, and desire to secure dampers d d in the outside wall, communicating with by Letters Patent, is the interior of the oven, Emil of the ventilating-fines 1. The arrangement of the furnaces with open- M and N, substantially in the'mauner and for the ings S S, the oven 0, chambers B B,f01'med by purpose herein described. arches C 0 below the oven, arches D F and chamber DANIEL MOORE. E above the even, chamber G at back end of the oven, and exit-fines H H in front, substantially as Witnesses: described. 7 J OHN N. CRAWFORD, 2. The arrangement of the hot-air flues K K with ROBERT P. MOORE. 

